.nav {
    height: 8%;
    background: #393D49;
    font-family: 微软雅黑;
    font-size: x-large;
}
.nav-right{
    padding-top: 1%;
}
#btn{
    height: 100%;
    display: inline-block;
    position: absolute;
    /* 直接计算 */
    /* top: 150px;
    left: 150px; */

}
.search-content{
    border-radius: 15px;
    padding: 0 60px 0 10px;
    width: 150%;

}
.search-icon {

padding-left: 30px;
color: #262626;
}